- Correspondence to Dr Nathalie Busso, Laboratory of Rheumatology, Centre des Laboratoires d'Epalinges, CLE D04-404, Chemin des Boveresses 155, Epalinges 1066, Switzerland;
- Received February 19, 2015
- Revised June 9, 2015
- Accepted July 14, 2015
- First published August 7, 2015.
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